Container



Aug. 31, 1937. w. A. RINGLER 2,091,291

CONTAINER Original Filed Jan. 21, 1933 7? ,4'@ if f f1? .9? J 3 f6 5/ 3333 5p 36 37 ag A33 6% 8% 49? 27 2f 2/ 29 an? 23 8 3.; 27 em 30 fa 78 y Wi2 Wazaa q.

ATTORN EY Patented ug. 31, 1937 UNITED- STATES PATENT OFFICE tonContainer Company, Philadelphia, Pa., a corporation of DelawareApplication January 21, 1933, Serial No. 652,891

Renewed ,May 9, 1936 8 Claims.

The object of this invention is to devise a'novel construction andarrangement of a container which can be formed from a single blank ofsheet material with a minimum amount of waste and wherein the ends areclosed and sealed in a novel manner.

A further object of the invention is to devise a novel construction of acontainer having multiple sides which has its ends closed in such amanner that finely powdered material will not sift from the ends of thecontainer.

With the above and other objects in view, as will hereinafter moreclearly appear, my invemtion comprehends a novel container having theends sealed in such a manner that it is sift-proof and at the same timethe delivery end can be readily opened when the material contained Withrin the container is to be removed or dispensed therefrom. I

It further comprehends a novel blank havin weakened lines whereby it canbe folded 'to form a multiple wall container and to form endmembers-having overlapping portions, the length of said end membersbeing greater than the'radius 5 of the discharge end of the container.

It further comprehends a novel end lock for a container wherein the'walls overlap and are adapted to be secured together by adhesive, ifdesired, and at the central portion the walls also overlap to form aclosure at such location.

It further comprehends a novel container wherein'a novel construction ofa retaining member is employed which prevents bulging of the containerat its ends and which, if desired,-can be provided with a layer offibrous material,

preferably a material which will mat, such as, for

example, cotton so that when the adhesive is applied a'sift-proof sealwill be formed and the pressure of the material against such sealingmember tends to cause its peripherial portion to more closely engage theinner walls of the container.

Other novel features of construction and ad- 5 vantage will hereinafterappear in the detailed description and the appended claims.

For the purpose of illustrating the invention, I

have shown in the accompanying drawing a typi-- cal embodiment of it,which, in practice, will give satisfactory and reliable results. It is,however, to be understood that this embodiment is' typical only and thatthe .various instrumentalities of which my invention consists-can bevariously arranged and organized, and the invention is not limited tothe precise arrangement and organization of these instrumentalities asherein set forth. a

Figure 1 is a top plan view of a blank formed' from sheet material andfrom which a container embodying my invention can be formed.

Figure 2 is a perspective view of a container embodying my inventionwith the ends in closed and sealed condition.

Figure 3 is a plan view of a sealing member employed.

Figure 4 is a perspective view of the container with the top end openedand ready for sealing.

Figure 5 is a section on line 5-5 of Figure 2.

Figure 6 is a section oniline 6-4 of Figure 2, the bottom portion beingomitted.

Figure 7 is a perspective view of a portion of the container showingmore clearly the manner in which an end closure is folded inwardly.

Figure 8 is a sectional view of the sealing member having a layer offibrous material on one face thereof.

Similar numerals of reference indicate corresponding parts.

Referring to the drawing:

- I designates a blank formed from sheet material and provided withweakened lines in order to adapt it to be folded into a containerembodyingmy invention. The blank is of substantially rectangularformation so that there is a minimum waste of material. The blank I isprovided with the longitudinally extending weakened lines 2 and 3 andthe transversely extending weakened lines 4, 5, 6, I, 8, 9, l0 and II,which contribute to form the side wall folds l2, l3, l4, l5, l6, l'|, l8and I9, and a securing flap 23. These lines also contribute to form theend folds 2!, 22, 23, 24, 25, 26,21, 28 and 29 at opposite sides of theblank. One end of the blank is cut away as indicated at 30. The folds 22to inclusive are.

each provided with lines extending at an angle to the lines 2' and 3 andthe juxtaposed transversely extending weakened line. These lines areindicated at 3|, 32, 33, 34, 35, 36, 31, and 38, respectively, whichcontribute to form the subfolds 40, ll, 42, 43, 44, 45, 46 and 41. Thesecuring flap 20 and folds 29 are provided with adhesive so that whenthe fold l2 and the fold 2| are folded over then the free ends of theblank will be secured together.

Prior to this operation the blank is preferably run over means whichwill bend the blank on the weakened lines so that the different foldswill be the more readily bent into formation. The free ends of the blankcan be secured tog her when the blank is folded upon itself and flat andthe blank is now opened out into the form seen in Figure 4, both endshowever being open. The bottom 'ofthe container may now be permanentlysealed by folding inwardly the folds 2| to 28 inclusive so that thefolds progressively overlap circumferentially of the folds. Prior tothis infolding of the end folds of the container adhesive may be appliedthereto and a block or anvil placed within the container so that the endfolds are secured together under pressure and at the bottom the foldsnow appear as shown in Figure 5.

In some cases it is advisable to employ a sealing member which may be inthe form of that shown in Figure 3 or have in addition a layer offibrous material applied to a surface thereof, as shown in Figure 8.

48 designates a sealing member formed from sheet material and having itsouter perimeter having the same number of sides as the sides of thecontainer in order that it will closely engage the inner walls of suchsides. As-I have preferred to'illustrate the-container as having eightwalls, the sealing member 48 has an octagon shape, and it is alsopreferably dished as will be understood by reference to Figures 3, 6 and8.

Assuming that the bottom of the container is to be sealed, this sealingmember can be placed in the bottom and, if desired, glued to theoverlapping bottom end folds. A similar sealing member can be placed inthe upper end of the container after it has been filled and the endflaps folded down and sealed by gluing or similar means, or the top endfolds may be left unsealed.

If a finely powdered or comminuted material is packed in a container,such as, for example, flour, it has been found very diflicult to sealthe ends in such a manner that the material will not sift through theglued ends. In case such material is packed in a container of. myconstruction I find it especially advantageous to use a sealing memberas shown in Figure 8 which has had applied to the face of it a fibrousmaterial 49 such as, for example, cotton. It will be seen that when theend folds are folded down in overlapping relationship with the glueapplied thereto that this glue will adhere to the cotton and there willbe no possibility of the glue contaminating the material which has beenpacked in the container.

If the package is shaken the pressure of the material against thesealing members 48 will cause their outer .perimeter to more closelyengage the inner .edges or corners between the end folds and the sidewalls and thus prevent any seepage or leakage of material at such point.A

Due to the fact that the end folds are longer than one-half the diameterof the opening into which they are folded, it will be apparent that theyoverlap at the central portion so that there is no central opening in anend closure.

With many types of material it is not neces sary to seal the end foldsespecially in case a sealing member, such as 48, is employed since theend folds can spring inwardly as shown in Figure 6.

The sealing memberalso serves to prevent the deformation or bulging ofthe container at its outer end.

The purpose of having the angularly directed lines on the end folds runin different directions at opposite sides of the blank is so that all ofthe score lines can be broken at the same time by running the blank, forexample, through rollers in the same direction although, of course, theymay, if desired, be directed in the same direction.

It will be noted that the free end of one end fold passes beneath ajuxtaposed end fold and as the glue is applied to both the inner andouter marginal portions of the end folds the overlapping folds aresecured together at the central portion.

The sealing member is preferably dished so that when the top is sealedby the infolding of the end folds at the top they will move inwardly sothat the enclosure thus formed is dished or in other words inwardlydeflected so that it cannot bulge o .ardly and a firm support is formedfor the container.

Since the sealing member is preferably dished or slightly cone-shaped,the pressure of the material packed in the container against it will bepassed to the peripherial portion of the sealing member and not to thecentral portion thereof so that the pressure is imparted to the outercontainer at the places where the end folds join with the side walls ofthe container. It will thus be seen that if the container is shaken theend folds will still be retained in their closed position since thepressure of the material will not be imparted to the central portion ofthe closure formed by such end folds. The free marginal portions of anend fold when in sealed position I overlap the end fold beneath it andwhen these folds are secured together, for example, by gluing, a veryrigid enclosure is provided.

The main function of the fibrous material on the sealing member, suchas, for example, cotton, is to provide a filling which will fill thecrevices between the folds of the closure and the sealing member so asto positively prevent any sifting or leakage of the material packed inthe container through the closed ends of the container. When an endclosure to which glue has been applied is folded inwardly and sealed theglue will adhere to the cotton.

It will, of course, be apparent that the sealing member itself mayconsist of a fibrous or textile material, such as, for example, cotton,and the sealing member proper, such as, for example, a piece ofcardboard, or the like, may be dispensed with.

It will now be apparent that I have devised a new and useful containerwhich embodies the features of advantage enumerated as desirable in thestatement of the invention and the above description, and while I have,in the present instance, shown and described a preferred embodimentthereof which will give in practice satisfactory and reliable results,it is to be understood that this embodiment is susceptible ofmodification in various particulars without departing from the spirit orscope of the invention or sacrificing any of its advantages.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent, is:

1. A container, comprising a blank sheet of material having fold linesto provide for its folding into a polygonally sided container, saidblank having end folds of greater length than width and of greaterlength than one-half the diameter of the open end of the container, theend folds being formed by fold lines extending at an angle towards theirfree ends, the fold lines at one end extending in a different directionthan those at the opposite end, whereby when they are folded inwardlythey are in overlapping relationship,

end folds of greater length than width and of 1 greater length thanone-half the diameter of the open end of the container, the end. foldshaving fold lines extending at an angle toward their free ends, thefoldlines at one end extending in a diiferent direction than thoseat theopposite end whereby when they are folded inwardly they are 7 inoverlapping relationship, said blank. having at one end a securing flapextended to form end folds which are provided with diagonally extendingfold lines, and a polygonally sided sealing member inwardly of thefolded end folds and contacting said sides. Y 3. A container, comprisinga blank of sheet material having fold lines to provide for its foldinginto a polygonally sided container having end folds of greater lengththan width and of, greater length than one-half the diameter of the openend of the container, the end folds having fold lines extending at anangle towards their free ends whereby when they are folded inwardly theyare in overlapping relationship, said blank having at one end a securingflap extended to form end foldswhich have fold lines diverging towardsan end of the blank, and a polygonally sided sealing member inwardly ofthe folded end folds and contacting with said sides, said sealing memberhaving cotton glued to the outer face thereof.

4. A container, comprising a blank of sheet material having fold linesto provide for folding it into a polygonally sided container with endfolds substantially rectangular except an end fold at 40 the free end ofthe blank, said end folds being of greater length than one-half thediameter of the open endof the container, said end folds being ofgreater length than width and provided with fold lines which at oppositeends extend in different directions to form triangularly shaped blank.

sub-folds providing for the infolding of the and folds in progressivelyoverlapping relationship, said blank havlngat. one end a securing flapextended into end folds having fold lines diverging towards an end ofthe blank.

5. A container having overlapping end folds, and a sealing memberhaving. flufly fibrous material between it and the end folds andpreventing the material packed in the container sift- 'ing therefrom. rv

6. A container having overlapping end folds, and a dished sealing memberhaving fluffy fibrous material between it and the end'folds andpreventing the material packed in the container sifting therefrom,

'7. A container formed from a sheet of blank material of uniform widthvthroughout its length and foldable to form polygonal sides and endfolds, said blank having at one end a securing flap extended into endfolds having fold lines diverging towards an end of the blank, said endfolds comprising inwardly converging folds alternating with outwardlyconverging folds, said end folds being of greater length than one-halfthe diameter of the open end of the container whereby the end folds arefolded inwardly and secured in overlapping relationship, the. juxtaposedend opening of the container being sealed and inwardly deflected. p 8. Acontainer, comprising a blank of sheet material of uniform'width'throughout its length having fold lines to provide for itsfolding toform a. polygonally sided container having'a number of endfolds corresponding to the number of sides adapted to be folded inwardlyand of greater length than width and of greater length than one-half thediameter of the open end of free ends of one end fold overlapping ajuxta- .posed fold beneath it, said blank having at one end a securingflap extended into end folds havinglfold lines diverging towards an endof the I

